If you get the following error during Lync enabling - Management object not found for identity
This is due to a bug in Lync, where one call doesnt take the DC passed in. If you have more then 1 AD controller, you will get into a race state, and this will occur.
To Fix it:
- Replace the file Manged Lync 2013.xml (dont rename the old one) (in attachements below) on the Engine server in C:\Program Files (x86)\ExtendASP\EPS\Ion Cloud Engine Repository\Namespaces\Managed Provider Namespaces
- Do a full Deploy to the servers